The Sony Mylo Communicator 2 is a huge improvement over its predecessor, but the Wi-Fi handheld will have a hard time competing with the similarly priced and better featured iPhones, Sidekicks, and Helio Oceans of the cellular world.

The Sony Mylo Communicator 2 is a huge improvement over its predecessor, but the Wi-Fi handheld will have a hard time competing with the similarly priced and better featured iPhones, Sidekicks, and Helio Oceans of the cellular world.

Though not necessarily worth the price for an upgrade, the Nokia N810 Internet Tablet brings some nice additions to the mobile Web browsing device, including a full QWERTY keyboard and integrated GPS.

Though it won't appeal to the masses quite yet, the Nokia N800 Internet Tablet is a nice, portable device for on-the-go Web browsing, and it has some worthy upgrades.

Though not ideal for the car, the ultraportable Mio H610 is an accurate navigator and a decent multimedia player for use on foot.

Though the Pharos Drive GPS 140 has an accurate receiver and good Bluetooth integration, it will require patience on your part as it suffers from somewhat sluggish performance and an unintuitive interface.

The HP iPaq rx5900 Travel Companion delivers a sleek all-in-one navigation, productivity, and entertainment device to mobile professionals; we just wish it had better battery life.

The Sony Mylo offers nice messaging and multimedia features for students, but we're not sure that's enough.

Maps and personal data go hand in hand with the Pharos Traveler GPS 525, a PDA that effectively combines organization with navigation to not only find where you are but also point you where to go.

The Palm Z22 provides an affordable, very basic, and easy-to-use PDA suitable for first-time buyers and technophobes.